Effects of forest roads on vegetation biodiversity and soil characteristics in Hyrcanian forests

As one of the main components of forest operations and sustainable management, forest roads affect the vegetation communities around the road. In this study, the effects of the edge of forest roads were investigated to understand the changes caused by the network of forest roads on the Hyrcanian forest ecosystem in northern Iran. In order to investigate the impact of forest roads on the biodiversity of herbaceous species, tree regeneration and lichen. Sampling was used at different distances from the road in two control and harvested areas. The effects of roads on vegetation diversity in relation to soil characteristics were also investigated. The results showed that harvesting caused the destruction and reduction of tree regeneration, herbaceous and lichen, but the physical and chemical properties of the soil were not affected. The distance from the road has affected the diversity and richness of herbaceous and lichen, tree regenaration and all physical and chemical characteristics of ...作为森林作业与可持续经营的核心组成部分之一，森林道路（forest roads）会对道路周边的植被群落产生影响。本研究针对森林道路边缘的影响展开调查，以期明晰伊朗北部赫卡尼亚森林生态系统受森林道路网络影响所产生的变化。为探究森林道路对草本植物、树木更新及地衣的生物多样性所产生的影响，研究在对照样地与采伐样地两类区域中，沿距道路不同距离梯度开展采样工作。同时还调查了森林道路对植被多样性的影响及其与土壤特性的关联。研究结果显示，采伐活动会导致树木更新、草本植物与地衣的生存受到破坏且丰度降低，但并未对土壤的理化性质产生影响。距道路的距离会对草本植物与地衣的多样性及丰富度、树木更新情况，以及土壤的各项理化特性产生影响……